51, just like all the other isotopes of Antimony.
The amount of protons does not change in any of the isotopes of any element.
If it were to it would be a different element.
Flerovium has 114 protons.
Antimony (symbol Sb) has three isotopes: 121Sb, 123Sb, and 125Sb. The 121 isotope has 70 neutrons, and the 123 isotope has 72 neutrons. The 125 isotope isn't stable and will decay, but it has 74 neutrons.
Germanium has 32 protons.
Boron has 5 protons.
82
Osmium has as many protons as it needs
2 protons
It has 26 protons.
Bohrium has 107 protons.
26 protons
39 protons
how many protons does the carbonate ion have?
Beryllium has 4 protons
Oxygen has eight protons.
Livermorium has 116 protons.
None -- all protons are protons, which are different from neutrons.
Californium has 98 protons.